code: def test_estimate_belongs(self, n_samples, atol):
      X = self.data_generator.random_point(n_points=n_samples)
      mean = self.estimator.fit(X).estimate_
      belongs = self.estimator.space.belongs(mean, atol=atol)
      self.assertTrue(belongs)
  
file_path: geomstats/geomstats/test_cases/learning/_base.py
imports: import pytest
  import geomstats.backend
  from geomstats.test.random import RandomDataGenerator
  from geomstats.test.test_case import TestCase
  from geomstats.vectorization import repeat_point
label_desc: Use image node_id 4 for calling the MeanEstimatorMixinsTestCase obj's underlying member method code with example usage: obj.test_estimate_belongs(n_samples, atol) without return types